Patents by Inventor Timo Varpuna

Timo Varpuna has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Rfid spoilage sensor for packaged food and drugs
    Publication number: 20070176773
    Abstract: The present invention relates to a remotely readable sensor (22) for indication of usability condition of perishable products such as foodstuffs and medical drugs. The sensor incorporates an element responsive to the condition of the perishable product. According to the invention, the sensor (22) is placed inside the foodstuff package.
    Type: Application
    Filed: November 15, 2002
    Publication date: August 2, 2007
    Inventors: Maria Smolander, Heikki Seppa, Eero Hurme, Timo Varpuna, Juha-Maiti Saari, Ilkka Suni, Jorma Sammi, Pani Majander